An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-5127-1 | linux security update |
Debian DSA |
DSA-5173-1 | linux security update |
EUVD |
EUVD-2021-34056 | An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system. |
Ubuntu USN |
USN-5278-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-5337-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5368-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5467-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5500-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5505-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5513-1 | Linux kernel (AWS) vulnerabilities |
Ubuntu USN |
USN-5515-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-5541-1 | Linux kernel (Azure) vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-03T17:16:04.250Z
Reserved: 2022-01-03T00:00:00
Link: CVE-2021-4197
No data.
Status : Modified
Published: 2022-03-23T20:15:10.200
Modified: 2024-11-21T06:37:07.517
Link: CVE-2021-4197
OpenCVE Enrichment
No data.
Debian DSA
EUVD
Ubuntu USN